Operation CHARM: Car repair manuals for everyone.

Service Hints

Multiplex Communication System

T4 THEFT DETERRENT ECU
1 - GROUND : Always approx. 12 volts
2 - GROUND : Always approx. 12 volts
14 - GROUND : Approx. 12 volts with ignition SW at ON or ST position
24 - GROUND : Always approx. 12 volts
12 - GROUND : Always continuity

B4 (A), B5 (B) BODY ECU
1 - GROUND : Always approx. 12 volts
2 - GROUND : Approx. 12 volts with ignition SW at ON or ST position
3 - GROUND : Approx. 12 volts with ignition SW at ACC or ON position
7 - GROUND : Always approx. 12 volts
(A)24 - GROUND : Always approx. 12 volts
(A)11 - GROUND : Always continuity
(B)14 - GROUND : Always continuity

D19 DRIVER DOOR ECU
13 - GROUND : Always continuity
21 - GROUND : Approx. 12 volts with ignition SW at ON or ST position
23 - GROUND : Always approx. 12 volts
24 - GROUND : Always approx. 12 volts

F14 FRONT PASSENGER DOOR ECU
8 - GROUND : Always continuity
12 - GROUND : Always approx. 12 volts

P20 (A), P21(B) POWER SEAT ECU
(A) 7 - GROUND : Always continuity
(A) 8 - GROUND : Always approx. 12 volts
(B)13 - GROUND : Approx. 12 volts with ignition SW at ON or ST position
(B)19 - GROUND : Always continuity